condition mean min max ZT0-3 66.328549345 59.63953317 73.01756552 ZT4-7 108.30291221 67.63036262 148.9754618 ZT8-11 107.73157477833334 99.25283377333334 116.21031578333334 ZT12-15 62.85665651833334 62.47478061666667 63.23853242 ZT16-19 64.05612452333334 54.50718631666667 73.60506273 ZT20-23 78.8280685 60.14300333 97.51313367